Calculation of Transonic Flows Using WENO Method with a Low Diffusion E-CUSP Upwind Scheme

Zha, Gecheng; Shen, Yiqing; Wang, Baoyuan; Gables, Coral

doi:10.2514/6.2008-745

Cited by 38 publications

(46 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LDE scheme can capture crisp shock profile and exact contact surface discontinuities as accurately as the Roe scheme [22]. However, it is simpler and more CPU efficient than the Roe scheme due to no matrix operation.…”

Section: The Low Diffusion E-cusp Scheme For Inviscid Fluxmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Drag Prediction Using RANS models and DDES for the DLR-F6 Configuration Using High Order Schemes

Gan

Shen

Zha

2016

54th AIAA Aerospace Sciences Meeting

Self Cite

View full text Add to dashboard Cite

This paper compares the accuracy and robustness of steady state RANS, unsteady RANS, and DDES turbulence models with high order schemes for predicting the drag of the DLR-F6 configuration. The implicit time marching method with unfactored Gauss-Seidel line relaxation is used with a 5th order WENO finite difference scheme for Navier-Stokes equations. The viscous terms are discretized using a 4th order conservative central differencing. The effect of grid size on the accuracy of drag prediction by using the different turbulent models are conducted on the coarse, medium and fine mesh models at the same angle of attack. The coarse mesh has about 10 drag counts deviation from the experiment, the medium mesh has 28 counts, and the fine mesh has about 15 counts difference. The RANS method achieves almost the same results as URANS and DDES at angle of attack of 0.49• . The DDES have the least deviation from the experimental drag result and the closest pressure distribution to the experiment in the trailing edge separation zone. However, since the DDES uses the same mesh as the RANS model in this paper, the DDES results should not be considered as conclusive.

show abstract

Section: The Low Diffusion E-cusp Scheme For Inviscid Fluxmentioning

confidence: 99%

“…The Low Diffusion E-CUSP(LDE) Scheme [21,22] is used to evaluate the inviscid fluxes. The basic idea of the LDE scheme is to split the inviscid flux into the convective flux E c and the pressure flux E p based on the upwind characteristics.…”

Section: The Low Diffusion E-cusp Scheme For Inviscid Fluxmentioning

confidence: 99%